root/pypi: links for csl-core

root/pypi csl_core-0.2.0a1.tar.gz
root/pypi csl_core-0.2.0a1-py3-none-any.whl
root/pypi csl_core-0.1.0a0.tar.gz
root/pypi csl_core-0.1.0a0-py3-none-any.whl